COPYRIGHT © 1996 MERIT INDUSTRIES, INC.
TSB24 - 5-23-96
Customer Service Bulletin
Csbull24.doc
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Date: 5/23/96
merit industries, inc.
Problem:
Tournament Megatouch games’ system date resetting to
February 1995.
Games affected:
A limited number of factory-made Megatouch Tournament
games, and games that were field-upgraded to Tournament
Megatouch, that use SC3981 at U51.
Symptoms:
System date resetting to February 1995.
Cause:
PAL programming may cause NV RAM error.
Solution:
Repalce U51 PAL SC3981 with SC3981-0A.
Using Figures 1 and 2, follow the directions below to change U51.
1. Turn off and unplug your game.
2. Open the CPU section door to access the CRT-260 board.
3. Using Figures 1 and 2, locate U51 on the CRT-260.
4. If your game comes equipped with the CRT-266/TTL touchscreen controller assembly, you will
need to remove it to access U51 (U51 is located beneath this assembly).
5. Using a small screwdriver, gently pry the existing PAL from its socket.
6. Install the new PAL, SC3981-0A, at U51.
7. Reinstall the CRT-266/TTL assembly if you removed it.